Arsenohauchecornite Mineral Data

Arsenohauchecornite Mineral Data +

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General Arsenohauchecornite Information

Chemical Formula:

Ni18Bi3AsS16

Composition:

Molecular Weight = 2,271.34 gm

Nickel 46.51 % Ni

Bismuth 27.60 % Bi

Arsenic 3.30 % As

Sulfur 22.59 % S

______

100.00 %

Empirical Formula:

Ni₁₈Bi₃AsS₁₆

Environment:

Occurs in hydrothermal Ni-Co-Cu veins.

IMA Status:

Approved IMA 1980

Locality:

From the Vermillion mine, Sudbury, Ontario, Canada. At Karagaily, central Kazakhstan, USSR. Link to MinDat.org Location Data.

Name Origin:

Alludes to its chemical relation to the hauchecornite group.

Synonym:

ICSD 203066

PDF 38-346

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Arsenohauchecornite Crystallography

Axial Ratios:

a:c = 1:1.05217

Cell Dimensions:

a = 10.2711, c = 10.807, Z = 2; V = 1,140.09 Den(Calc)= 6.62

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.771(1), 2.381(0.9), 2.284(0.8),

Crystal Structure:

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Grice J D , Ferguson R B , The Canadian Mineralogist , 27 (1989) p.137-142, The crystal structure of arsenohauchecornite

Physical Properties of Arsenohauchecornite

Cleavage:

None

Color:

Bronze.

Density:

6.35

Diaphaniety:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

5.5 - Knife Blade

Luster:

Metallic

Streak:

grayish black

Optical Properties of Arsenohauchecornite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Arsenohauchecornite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	41.60	43.00
546 nm	46.20	47.10
589 nm	48.20	49.20
650 nm	50.80	51.60

**Calculated Relative Intensity Colors of Arsenohauchecornite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R₁
R₂

Calculated Properties of Arsenohauchecornite

Electron Density:

r_electron=6.07 gm/cc
note: r_{Arsenohauchecornite}=6.62 gm/cc.

Fermion Index

Fermion Index = 0.00695
Boson Index = 0.99305

Photoelectric:

PE_{Arsenohauchecornite}= 507.37 barns/electron
U=PE_{Arsenohauchecornite} x r_electron=3,081.74 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Arsenohauchecornite is Not Radioactive

Arsenohauchecornite Classification

Dana Class:

3.2.5.4 (3)Sulfides - Sulfosalts

(3.2)where z/y = 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.2.5)Hauchecornite Group, Complex Ni sulfides (Tetragonal: P4/nnn or I4/mmm)

3.2.5.1 Hauchecornite Ni9Bi(Sb,Bi)S8 P 4/mmm 4/m 2/m 2/m

3.2.5.2 Bismutohauchecornite Ni9Bi2S8 P 4/mmm 4/m 2/m 2/m

3.2.5.3 Tellurohauchecornite Ni9BiTeS8 P 4/mmm 4/m 2/m 2/m

3.2.5.4 Arsenohauchecornite Ni18Bi3AsS16 I 4/mmm 4/m 2/m 2/m

3.2.5.5 Tucekite Ni9Sb2S8 P 4/mmm 4/m 2/m 2/m

Strunz Class:

II/B.15-30 II - Sulfides and sulphosalts

II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides with predominant Nickel, Cobalt, Rhodium and Palladium

II/B.15 - Hauchecornite group

II/B.15-10 Tucekite Ni9Sb2S8 P 4/mmm 4/m 2/m 2/m

II/B.15-20 Hauchecornite Ni9Bi(Sb,Bi)S8 P 4/mmm 4/m 2/m 2/m

II/B.15-30 Arsenohauchecornite Ni18Bi3AsS16 I 4/mmm 4/m 2/m 2/m

II/B.15-40 Tellurohauchecornite Ni9BiTeS8 P 4/mmm 4/m 2/m 2/m

II/B.15-50 Bismutohauchecornite Ni9Bi2S8 P 4/mmm 4/m 2/m 2/m

Other Arsenohauchecornite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Arsenohauchecornite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris

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Arsenohauchecornite

Ni18Bi3AsS16
Dana No: 3.2.5.4 Strunz No: II/B.15-30
Locality:

Notes: